After graphing the lines, you can see that the solution is (4, -1)
What múltiples to 70 and adds to 19
2 answers:
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(I crossed simplify)
Next cross multiply;
3b = 1
b = 1/3
To check if the statement is true just substitute the value of b in the equation;
3b = 1
3(1/3) = 1
1 = 1